How can I edit keyframes for shader nodes easily?
I think you have a filtering option unselected. If you have "Only Selected" enabled, then only the selected objects keyframes will appear.



You can then filter down within the object by toggling the visibility (eyes) as per below:



Finally after box selecting the keyframes, just press G and move them all. You can also restrict to the X&amp;Y planes as per normal, e.g. G + Y.